cascade-connected transformer串级: tandem; cascade变压器: transformer; voltage transfo ...分级变压器: stage transformer; staged transformer; step transformer串级变换机: cascade converter串级变频机: concatenated frequency changer下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:串级变压器，即可在微信中查询翻译
